Don't want to give them free advice, but nothing says they have to use ctatraintracker. Could be traintrackercta, or some other combination, so long as it is available. I'm also not going to do the GoDaddy or Network Solutions search for them. They have guys like Coppoletta to do it.

After all, the main reason why the main site is transitchicago.com is that some business had cta.com. In fact, still does.

They should sue him to get control of the name.
If he bought that domain name after Bus tracker was started, they'll have no problem getting it for free, except for the legal costs, which will also have the effect of bankrupting Goldstein.
But the CTA was also criminally stupid for not taking the traintracker name at the same time.